Windows 11 Slow After KB5034123 Update | Best Fixes

Is Windows 11 KB5034123 running slow after update? Easy repair guide!

Although Windows updates usually bring bug fixes and performance improvements, some users have reported that Windows 11 system has slowed down after installing the KB5034123 update. This article will provide several effective solutions.

KB5034123 update causes Windows 11 to run slowly

Microsoft released the KB5034123 security update for Windows 11 22H2 and 23H2 on January 9, 2024. This update fixes some known vulnerabilities and brings some improvements. However, some users have reported that the computer has been running significantly slower and even stuttered after the update.

Frequently asked questions include: corrupt Windows update cache files, lost or corrupt system files, and bugs in Windows update itself. Here are some solutions:

Fixed the problem of slow running after Windows 11 KB5034123 update

Method 1: Clear the Windows update cache

Windows update cache files can help improve update efficiency, but sometimes it can affect computer speed. You can try to clear the cache:

Step 1: Press the Win R key combination to open the run window, enter services.msc and press Enter.

Step 2: Locate and double-click the Windows Update service, click the Stop button, and then click OK .

Step 3: Press Win E to open File Explorer and navigate to C:\\Windows\\SoftwareDistribution\\Download folder. Use Ctrl A to select all files, and then right-click to select Delete .

Step 4: Return to the service window and start the Windows Update service.

Method 2: Repair corrupt system files

Lost or corrupt system files can also cause the system to run slowly. You can use the SFC command to fix it:

Step 1: Run the command prompt as administrator.

Step 2: Enter sfc /scannow and press Enter.

Step 3: Wait for the command to be executed and check whether the computer performance returns to normal.

Method 3: Uninstall KB5034123 update

If the above method does not work, you can try uninstalling the KB5034123 update:

Step 1: Use Windows Search to open the Control Panel .

Step 2: Under Programs , click Uninstall Programs , and then click on the left to view installed updates .

Step 3: Find KB5034123 and click the Uninstall button next to it.

Method 4: Optimize computer performance

You can use system optimization software (such as MiniTool System Booster) to further optimize computer performance, accelerate CPU, memory and hard disk resources, fix system problems, optimize startup programs, and more.

Summarize

By clearing the update cache, repairing system files, uninstalling updates, or using system optimization software, you can effectively solve the problem of slow running after Windows 11 KB5034123 update. If you have any questions, please contact the MiniTool technical support team.

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